EP 0574052 B1 19980812 - Color subcarrier frequency regeneration and chrominance demodulation circuits
Title (en)
Color subcarrier frequency regeneration and chrominance demodulation circuits
Title (de)
Schaltungsanordnungen zur Farb-Hilfsträger-Frequenzregeneration und zur Farbartdemodulation
Title (fr)
Circuits de régénération de la fréquence de sousporteuse de couleur et de démodulation de la chrominance
Publication
Application
Priority
- EP 93201328 A 19930507
- EP 92201353 A 19920512
Abstract (en)
[origin: EP0574052A1] In a color subcarrier frequency regeneration circuit which comprises a burst phase detector (1) for detecting the burst phase of a PAL signal having a color burst frequency and a line frequency, which burst phase detector (1) receives a color burst signal and reference data (+/- sin, cos) having said color burst frequency, and a reference signal generation circuit (VCO) having an input coupled to the burst phase detector, the reference data (+/-sin, cos) have a phase which alternates by half the line frequency.
IPC 1-7
IPC 8 full level
H04N 9/45 (2006.01); H04N 9/465 (2006.01); H04N 11/16 (2006.01)
CPC (source: EP)
H04N 9/45 (2013.01); H04N 9/465 (2013.01); H04N 11/16 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 93201328 A 19930507